Safety appliance for screwless holders.



L. W. ANDERSEN. SAFETY APPLIANCE FOR SCREWLESS HOLDERS.

APPLICATION FILED JUNE 3, 1914.

Patented Oct. 20, 1914.

2 SHEETSSHEET 1.

L. ANDERSEN.

SAFETY APPLIANQB/PO R SGREWLESS HOLDERS.

APPLIGATION FILED JUNE 3, 1914.

Patented Oct. 20, 1914.

2 SHEETS-SHEET 2.

TED STATES PATENT OFFICE.

LAURITZ W. ANDERSEN, 0F WATERBURY, CONNECTICUT, ASSIGNOIR. TO' THE PLUME& ATWOOD MFG. CO., OF WATERBURY, CONNECTICUT, A CORPQRA- TION OFCONNECTICUT.

Specification of Letters Patent.

Patented Oct. 20, 1914.

Application filed June 3, 1914, Serial No. 842,753.

To all whom it may concern Be it known that I, LAURITZ W. ANDER- SEN, acitizen of the United States, residing at Waterbury, in the county ofNew Haven and the State of Connecticut, have invented a new and usefulImprovement in Safety Appliances for Screwless Holders, of which thefollowing is a specification.

This invention relates generally to electric light fixtures and moreparticularly to a safety attachment adapted for use in connection withthe screwless socket cover and holder patented to me May 12, 1914, No.1,096,523. i

A holder of this kind is particularly adapted for use in connection withglobes and other forms of shades, and theobject of the present inventionis to provide a holding means for locking the interior shade engagingmeans while the exterior shade engaging means is being released andelevated, thereby avoiding the necessity of holding the shade or globein one hand while the exterior shade holding means is being released.

With this object in view my invention consists essentially in theemployment of a catch attached to the socket receiving shell which catchis adapted to engage the interior shade supporting means which arehinged to the said shell and are adapted to be inserted into the mouthof the shade to engage the interior thereof, the exterior of said shadebeing engaged by an outer shell connected to said inner shell and whichalso serves to lock the hin ed wings; it being understood that saidwings are collapsed or contracted for the purpose of inserting the sameinto the mouth .of the shade or globe to be supported.

The invention consists also in certain details of constructionhereinafter fully described and pointed out in the claims.

In the drawings forming a part of this specification: Figure 1 is a viewshowing the practical application of my invention, the globe orshadebeing securely fastened to the combined screwless socket cover andholder. Fig. 2 is a view showing the outer shell elevated and the globe,in dotted lines, supported upon the hinged wings, said wings being heldin place by means of my im proved safety appliance. Fig. 3 1s a simi-"lar view showing the wings released from the safety appliance andcollapsed for insertion into or withdrawal from the mouth of the globeor shade. Fig. 4 is a vertical sectional view of my device, the socketbeing shown in elevation. Fig. 5 is a vertical sectional viewillustrating in detail the safety appliance. Fig. 6 is a horizontalsectional view illustrating said appliance, and Fig. 7 is a detailperspective view illustrating one of the hinged wings.

In the drawings A indicates a globe or shade, B the incandescent lamp,and C the socket all being of the usual construction, the socket C beingconnected to a conductor pipe D, and mounted upon or connected to thispipe D is the inner shell E which is adapted to serve as a socket holderor cover and is preferably provided with threads E and also with anannular shoulder E An outer shell F is connected to the inner shell Ethrough the medium of the threads E and this outer shell is movable uponthe inner one for the purpose of engaging the exterior of the shade orglobe A and also for the purpose of securely locking the wings ormembers G, which are hinged or pivotally connected to the lower end ofthe inner shellsaid hinge or pivotal connection being intermediate theends of the wings and accomplished by means of lugs E projecting throughslots Gr cut in the wings. The lower ends of these wings are curvedoutwardly as shown at G in order to engage the interior of the shade orglobe as shown in Figs. 2 and 4, and the upper ends of the wings areformed with inwardly projecting flanges G which are adapted to bebrought into engagement with the annular, shoulder E when the said wingsare spread to engage and support the shade or globe. hen

.the outer shell F is screwed down to engage the exterior of the globeit also engages the upper ends of the wings and holds them firmlylocked. For the purpose of maintaining these wings in their spread andsupporting positions while the outer shell is being released and raisedI employ a safety appliance for maintaining these wings in thisposition, said safety appliance preferably consisting of a piece ofspring metal H attached to the interior of the inner shell and extendingdownwardly to the lower end of the shell which at that point is cut awayto afford room for a knob or button H carried at the end of the springplate II. This plate H is provided with beveled lugs or noses I whichproject through openings in the inner shell and are'adapted to engage.

the openings K produced in the adjacent ends of the wings, as mostclearly shown in Figs. 2, 6 and 7. .By reference to these figures itwill be readily understood that when the wings are spread or expanded soas to engage the interior of the shade or globe the apertured ends willride over the beveled lugs or noses which will spring out intoengagement with the apertures K as soon as the wings have reached theirlimit of expansion and the elasticity of the spring plate H will holdthese parts in engagement and the globe or shade will be supported,irrespective of the position of the outer shell F and consequently bothhands can be employed for the manipulation of said outer shell. When itis desired to completely release the wings the knob or button is pushedinwardly, withdrawing the lugs from the wings, and they can then becollapsed or folded into the position indicated in Fig. 3.

It will thus be seen that I provide a sim ple and eificient safetyappliance for use in connection with the screwless type of shade holderand by means of which the free use of both hands can be had at alltimes.

What I claim is:

1. A. device of the kind described com-- prising a shell adapted toreceive a socket,

means connected thereto for engaging the shell for holding said shadeengaging means in contact with the shade together with means attachableto the shell and adapted to lock said interior means in position andalso engage the exterior of the shade.

2. A device of the kind described comprising a shell and means connectedthereto for engaging the interior of a shade, means attachable to saidshell and adapted to engage the exterior of the shade, together withmeans carried by said shell for holding the interior shade engagingmeans independent of the exterior means.

3. A device of the kind described comprising'a shell, wings attached tothe end of said shell and a catch attached to saidshell and adapted toengage said wings, and an outer shell attachable to the inner shell.

4. A device of the kind described 'comprising an inner shell, wings hined thereto, a spring catch attached to sai shell and adapted to engagesaid wings, and an outer shell attachable to said inner shell.

5. A device of the kind described com- I LAURITZ w. ANDERSEN.

Witnesses:

R. G. RA'rro, C. W. MArrHnws.

